scholarly journals Disjointness-preserving operators and isospectral Laplacians

2021 ◽  
Author(s):  
Wolfgang Arendt ◽  
James Kennedy
Positivity ◽  
2020 ◽  
Vol 24 (2) ◽  
pp. 505-505
Author(s):  
Anke Kalauch ◽  
Onno van Gaans ◽  
Feng Zhang

2004 ◽  
Vol 141 (1) ◽  
pp. 21-32 ◽  
Author(s):  
Lawrence G. Brown ◽  
Ngai-Ching Wong

2019 ◽  
Vol 60 (1) ◽  
pp. 114-123
Author(s):  
A. G. Kusraev ◽  
Z. A. Kusraeva

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